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Citation:
　Zhifan Zhang,Hailong Li,Jingyuan Zhang,et al.Characterization of Underwater Explosive Loads of Blasting and Shaped Charges[J].Journal of Marine Science and Application,2024,(2):302-315.[doi:10.1007/s11804-024-00422-5]
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Characterization of Underwater Explosive Loads of Blasting and Shaped Charges

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Title:
Characterization of Underwater Explosive Loads of Blasting and Shaped Charges
Author(s):
Zhifan Zhang1;  Hailong Li1;  Jingyuan Zhang1;  Longkan Wang2;  Guiyong Zhang1; 3;  Zhi Zong1; 3
Affilations:
Author(s):
Zhifan Zhang1;  Hailong Li1;  Jingyuan Zhang1;  Longkan Wang2;  Guiyong Zhang1; 3;  Zhi Zong1; 3
1 State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, School of Naval Architecture Engineering, Dalian University of Technology, Dalian 116024, China;
2 China Ship Research and Development Academy, Beijing 100192, China;
3 Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, China
Keywords:
Blasting charge|Shaped charge|Load characteristics|Shock wave|Bubble
分类号:
-
DOI:
10.1007/s11804-024-00422-5
Abstract:
Blasting and shaped charges are the main forms of underwater weapons, and their near-field underwater explosions (UNDEX) can severely damage structures. Therefore, it is of great importance to study underwater explosive load characteristics of different forms of charges. The full physical process of a typical underwater explosion of a sphere/column blasting charge and a shaped charge was simulated using the Eulerian method. The loading characteristics of the underwater blast shock wave and bubble, as well as the projectile, were studied. The results show that the shock wave loads of spherical, cylindrical, and polygonal charges propagate outward in spherical, ellipsoidal-spherical and ellipsoidal- spherical wavefronts, respectively. When the shock wave reaches 16 times the distance-to-diameter ratio, its surface is approximately spherical. In addition, in the shaped charge underwater explosion, the shaped charge liner cover absorbs 30°-90° of the shock wave energy and some of the bubble energy to form a high-speed shaped penetrator. Spherical, ellipsoidal, and ellipsoidal bubbles are generated by underwater explosions of spherical, cylindrical, and shaped charges, respectively. The obtained results provide a reference for evaluating the power of underwater weapons.

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Memo

Memo:
Received date: 2023-10-13;Accepted date: 2023-12-26。
Foundation item: This work is supported by the National Natural Science Foundation of China (Grant Nos.52271307,52061135107,52192692 and 11802025),the Liaoning Excellent Youth Fund Program (Grant No.2023JH3/10200012),the Opening Project of State Key Laboratory of Explosion Science and Technology (Grant No.KFJJ21-09M),the Liaoning Revitalization Talents Program (Grant No.XLYC1908027),and the Fundamental Research Funds for the Central Universities (Grant Nos.DUT20RC (3)025,DUT20TD108,DUT20LAB308).
Corresponding author: Guiyong Zhang,E-mail:gyzhang@dlut.edu.cn
Last Update: 2024-05-28